hattersley



(No Model.) v R. L. HATTBRSLEY & J. HILL.

SHEDDING MECHANISM FOR-LOOMS- Nb. 43?,196. Patented Sept. 30, 1890.

UNITED STATES PATENT OFFICE.

RICHARD L. HATTERSLEY AND JAMES HILL, OF KEIGHLEY, ENGLAND.

SHE, DD|NG MECHANISM FOR LOOMS.

SPECIFICATION forming part of Letters Patent No. 437,196, datedSeptember 30, 1890. Application filed. January 7, 1890. Serial'lllo.336,179- (No modeltl Patented in Engl n Sep em r 1833, N 1 ,8

'No. 13,859, dated September 26, 1888,) of

which the following is a full, clear, and exact description.

Our invention relates to loom shedding mechanisms of the class whereinlevers having operating-catches attached to or hinged upon theirextremities are mounted about their center or middle parts upon otherlevers for effecting the desired changes of position in the heddles,(one style or arrangement of this class of mechanism being fullydescribed in the speci [ication of our United States Patent No. 383,465,dated May29,1888;) and our said invention consists of arranging andconstructing certain parts used in connection with these said sheddingmechanisms in such a manner that the object well known as lagging back(which means effectinga reversal in the direction of motion of thepattern-cylinder) may be accomplished in the said shedding mechanismswhen pattern mechanisms having peg-lags, each carrying two rows orseries of indicating-pegs, are employed. This object we attain by themechanism illustrated in the accompanying drawings, in which- Figure 1is an elevation of a shedding mechanism that may be applied to a loom inany of the well-known ways, and Fig. 2is a top view of a portionthereof, while Fig. 3 is a detail elevation, hereinafter referred to,having the frame-work omitted for the sake of clearness.

Similar letters and. figures refer to similar parts throughout theseveral views.

The catchesaand a, the levers b and f, the needles 8, the levers 25,pattern-cylinder u, and the three-armed lever 'v, as illustrated by theannexed drawings, are old and common and answer the same ends as do thecatches 7 3 and 7 3, the levers 68 and 47, the needles 75, the levers 77, the pattern-cylinder 79, and the three-armed lever 15, described inour patent, No. 383,465. However, in connection with the presentinvention, the pattern-cylinder u is only rotated at half the rate ofspeed at which the cylinder 79 rotates relatively with the movements ofthe other parts of mechanism, forming the complete shedding mechanism ineach case, respectively. To allow this retard ed movement of thepattern-cylinder u, peglags a, each having two rows orseries ofindicating-pegs d, are employed in connection therewith'one to indicateupon one series of catches a, while the other indicates upon the otherseries a through the medium of the parts above describedthis method ofusing two rows or series of pegs 01 mounted upon each lag 0 being old,common, and well understood both in England and the United States.

In practice it is well known that whenever peg-lags c, with a doubleseries of pegs cl, are employed, in order that the same should operateefficiently to produce a proper opening in the warp when weaving in astraightforward manner, it is necessary to rotate the cylinder u ata'certain time relatively with the time of movement of the draw-bars eand e, and we find that, in order to prevent the liability of thepeg-lags 0 being disarranged, so as to place the catches a and a atcross-purposes when the direction of motion of the pattern-cylinder u isreversed to effect the pro cess of lagging back, as above described, itis necessary that the movements of the said cylinder ushould be kept incertain unison with those of the said draw-bars e and eas, for example,should the cylinder to be moved at the time the draw-bar e is making itsforwardmovement, as, say, in the direction of the arrow gwhen performingits proper functions during the process of weaving. Wehave found thatwhen the direct-ion of motion of the cylinder u is reversed it must bemoved at the time the bar 6 is-making its backward movement, or oppositeto that indicated by the said arrow 9. To effect this in accordance withthis our invention, we mount the ratchetwheel h upon the cylinders shaftu. This wheel it has its teeth or peripheral ridges h so formed that theratchet may operate it by pulling it in the direction shown by the arrow1, While the ratchet k may operate it by pushing it in the oppositedirection. These catches k and k are both mounted or hinged upon thesliding piece m, which is operated by being coupled to the lever o bymeans of the r0 0.

In order to place the ratchets k 70' into and out of operation, (onealways being required to be out of operating position when the other isin operating position,) the cam-piecep, having double surfaces 19 and pfor operating the ratehets k and k, respectively, is mounted upon theframe-Work A and may be manually operated by the operative through themedium of the rod or handle w when and as may be desired.

\Ve claim- 1. The catches a a, the needles 3, swing-levers b, levers fand t, draw-bars e e, lever v, means for coupling said lever 12 to thebars 0 e, the rod 0, the sliding piece m, the ratehets k k, theratchet-wheel h,eylinder u, and peglags 0, having two rows or series ofpegs d, in

combination, the same being arranged to 0perate substantially asspecified.

2. The lever v, the rod 0, the sliding piece m, the ratchets 7c 70, theratchet-Wheel h, and the cylinder u, in combination, the same beingarranged to operate substantially as specified.

3. The ratchets 7c 70, the double cam 19 p, the handle w, and thereciprocating slidepiece on, in combination, the same being arranged tooperate substantially as herein set forth.

RICI'ID. L. llA'lTERSLEY. JAMES HILL. Witnesses: SAMUEL HEY,

.ToHN WHITEHEADi

